Wax eliminator



Feb. 17. 1925. 7 1,526,615

C. G. STOWELL ET AL WAX ELIMINATOR Filed Oct. 29, 19 21 W 12 5 2i! 1 I 0 600 g N b 1 is I 1A L d c i A H i B a i fi A \w ATTORNEY Patented Feb. 17, 1925.

UNITED STATES CHARLES G. STOWELL ROBERT I. SIHHE, F DULUTH, MINNESOTA.

PATENT @FFME.

WAX ELIHINA'I'OR.

Application filed October 29, 1921. Serial 1%. 511,510.

Tu all whom it may concern.-

Be it known that we, CHAnLns'G. S'rownu. and ROBERT F. SIMME, citizens of the United States, residing at Duluth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Wax Eliminators, of whichwe do declare-the following to be a specification.

Our invention relates to wax eliminator, and has for its object the provision of a simple, cheap, durable, and convenient eliminator for eliminating the wax and excess moisture from dentists investment moulds.

It consists of the structures, combinations and arrangements of parts hereinafter described and claimed.

Inthe drawings, Fig. 1, is a side elevation of our said invention. Fig. 2, is a central vertical section of the same. Fig. 3, is a top plan view of said invention. And Fig. 4, is a horizontaksection of the same on the line A-B of FigT2\- In the drawings, 1, is a gas burner of any suitable structure, preferably comprising a gas and air containing and mixing chamber 1, provided with a gas intake port 1", and

an air intake port or port-s 1, which air intake ports are preferably governed by an adjustable gate 1". At, or near the upper end of said burner is a horizontally disposed cover or diaphragm 1, the upper surface of which is preferabl concave. One of the features of our said invention is that we form an aperture in said diaphragm, as at '1, and position below it adrain or discharge pipe 2, of any suitable form or structure, conununicating at one end with said aperture and extending at the opposite end out of said chamber. If desired, a bucket 3 may be suspended from, or positioned below the outer end of said drain to catch the wax and water discharged therefrom. Upon said diaphragm, concentric with said aperture, is positioned a cylinder or retort 4, open at each end and preferably removable from said diaphragm.

. Communicating with said chamber and with the area above said diaphragm outside of said retort, are one or more as ports, 1 preferably arranged in a circ e around said retort and adapted to dischar e toward the same. Said ports 1 preferab extend through said diaphragm. A flexib e tube 5,

is preferably provided for connecting the intake port of said burner to a source of gas supply (not shown).

' Heretofore, it was customary to provide for-this purpose a retort having an individual closed bottom; or else an open-,botton. retort adapted to discharge into an underlymg closed-bottom receiving cup within the urner, from which the water and wax could not escape out of the burner and in which the wax tended to burn or gum, or from which the mixture tended to s atter or boil over on to adjacent parts within the burner; which forms of closed retort, or of inclosed drain cup required considerable time and labor for cleaning.

Also the eliminated wax in the closed retort or flask tended to adhere in appreciable quantities to any portion of the mould which contacted with the bottom of the re tort, and to dri therefrom if the mould was withdrawn whi e hot, or to cling thereto if the mould was Withdrawn after cooling.

In the operation of our invention, the investment mould, including plaster and wax -the plaster usually containing considerable excess moisture-is placed in the retort and the gas jets at the ports 1 are lighted. The flames of said jets, extending toward said retort, heat the same and the contained mould to a high temperature, whereby the moisture is drawn, driven, or boiled from said plaster and evaporated, or drawn off through said drain. At the same time the wax is melted from said mould and immediately run off through said drain and is collected in said bucket and saved. The burner is thus kept clean. We are aware that somewhat similar burners have hereto fore been constructed, but without a drain or pipe communicating with the; retort and discharging out of the burner; nor provided with a cover or diaphragm as herein described.

It is obvious that the structure embodying our invention may be changed or modified in certain particulars within the scope and spirit of our claim.

What we claim is- In a wax eliminator, the combination of a burner'comprising a mixing chamber provided with an intake port, a cover or diaphragm extending over said mixing chamber, an open bottom retort erected upon said diaphragm, said diaphragm having gas discharge ports formed therein adapted to discharge, against the outer side of said, retort, said diaphragm having an aperture formed therethrough beneath the open bottom of said retort, and a discharge plpe communicating with said aperture at the lower side of said diaphragm and extending downwardly through one of the walls of said mix- 10 ing chamber.

In testimony whereof, we hereunto aflix our signatures, in resenee of two witnesses.

CHAEtLES G. STOWELL. ROBERT F. SIMJME. Witnesses: 1

LESLIE C. GmBEn'rsoN, r W. V. WILLEY. 

